The correlated colors of transneptunian binaries

摘要: Abstract We report resolved photometry of the primary and secondary components 23 transneptunian binaries obtained with Hubble Space Telescope. V–I colors range from 0.7 to 1.5 a median uncertainty 0.06 magnitudes. The primaries secondaries are correlated Spearman rank correlation probability 99.99991%, 5 sigma for normal distribution. Fits vs. identical within measurement uncertainties. color as group is indistinguishable that larger population apparently single objects. Whatever mechanism produced TNOs acted equally on binary systems. most likely explanation objects alike primordial indicative their origin in locally homogeneous, globally heterogeneous protoplanetary disk.